On Wed, Jan 01, 2003 at 12:15:29PM +0530, Vishwanath wrote: > > Hi All, > > In PPC Linux, to bring a particular IO page onto Linux addressing space, we > use ioremap64(). Is my understanding correct? If I want to map this remapped
Yes. > address on user space, I have to use remap_page_range() of kernel in my > driver. remap_page_range() takes a 32-bit physical address as argument. But > in 440GP, all addresses are 36-bit with respect to processor. Is there any > 64-bit equivalent of remap_page_range(). If it exists, how to use it? There's a patch to make remap_page_range() use a phys_addr_t and to use the same bigphys fixups that ioremap() on 440gp uses. Part of it is a bit of hack which is why it's not being commited. See the changeset description in linuxppc_2_4_devel or linuxppc-2.5 for a pointer to pick up the patch. Regards, -- Matt Porter porter at cox.net This is Linux Country. On a quiet night, you can hear Windows reboot. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
